/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.spi;

import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;

public class JoinTableSet
        implements ConnectorTableHandle
{
    private final Set<JoinTableInfo> innerJoinTableInfos;

    public JoinTableSet(Set<JoinTableInfo> innerJoinTableInfos)
    {
        this.innerJoinTableInfos = innerJoinTableInfos;
    }

    public Set<JoinTableInfo> getInnerJoinTableInfos()
    {
        return innerJoinTableInfos;
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }
        JoinTableSet o = (JoinTableSet) obj;
        return Objects.equals(this.innerJoinTableInfos, o.innerJoinTableInfos);
    }

    @Override
    public int hashCode()
    {
        return Objects.hash(innerJoinTableInfos);
    }

    @Override
    public String toString()
    {
        return innerJoinTableInfos.stream()
            .map(info -> info != null ? info.toString() : "null")
            .collect(Collectors.joining(":"));
    }
}
